NNN-T-001529 Revision B:1970
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
26-09-1990
Describes strips and rolls of indicator test papers for establishing the hydrogen ion concentration of solutions. Papers are of varying range, class and style.
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